谈公路路面翻修用温拌沥青混合料的实验室评估

Laboratory Evaluation of WMA Mixture for Use in Highway Pavement Rehabilitation

温拌沥青(WMA)使公路路面翻修施工后,能够快速恢复交通。论文做了与温拌沥青相关的室内试验,如车辙试验、浸水车辙试验等,并将3种温拌沥青混合料和传统的热拌沥青进行系统比对。研究表明,总体来说,温拌沥青混合料的生产温度比正常沥青混合料降低了30℃,但同样表现出了与热拌沥青混合料相当的性质,所以,它被推荐用来在公路路面翻修时使用。

Theconceptofwarmmixasphalt （WMA）gives apromise for rehabilitatinghighwaypavementtorealizequicktumover to traffic aiter construction. In this study, three WMA mixtures （different gradations） were systematically investigated compared with the conventional hot mix asphalt （HMA） through a series of laboratory tests in terms ofwheel tracking test, submerged wheel tracking test. Results showed that overall, the WMA mixture with a coarse gradation produced at the temperature 30℃ lower than the normal exhibited a comparable performance compared with the control HMA mixture, and it was further recommended for use in highway pavement rehabilitation.